Name: Polyester Film
Brand: Contact for Price & Availability
Price: 0.01 AUD
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polyester film electrical insulation roll class b 130c mylar with white finish on plain background

Flexible Insulation Laminates

Polyester Film Insulation
Mylar® Electrical Film – Class B (130°C)

Our clear and opaque Mylar® polyester films offer reliable electrical insulation performance for Class B (130°C) environments. Widely used in motor rewinding, transformers, and general electrical maintenance, this material provides excellent dielectric strength and mechanical resilience.

Key Features:

Flexible and Tear-Resistant: Conforms easily to tight windings
Excellent Dielectric Properties: Ideal for use in low- to medium-voltage systems
Chemical & Moisture Resistant: Performs well in a range of industrial environments
Sold by weight (kg): Each roll is 1 metre wide. Sold by weight (kg). Roll length varies by film thickness — see table below for reference.
Available Thicknesses (in microns): 50, 75, 100, 125, 190, 250, 350

Common Applications:

Slot liners, phase insulation, and coil barriers in motor repair
Transformers and electrical control gear
Component wrapping and electrical/electronic protection

Industries Served:

Motor rewinders and electrical repair workshops
Transformer manufacturers and OEM equipment builders

Availability:

Supplied in rolls or cut sheets
Custom widths available on request

Polyester film is part of our flexible insulation laminate range. For a full insulation system, consider combining it with high-temp sleeving or electrical varnishes.

▼ Each roll is 1 metre wide and sold by weight (kg). Approximate roll length varies with film thickness — see table below for guidance.

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Polyester Film Thickness & Roll Length Guide

All rolls are 1 metre wide. Approximate roll length per kilogram will vary slightly due to manufacturing tolerances.

Film Thickness (µm)	Equivalent Thickness (mm)	Approx. Length per kg (m)
50	0.05	≈ 15 m
75	0.075	≈ 10 m
100	0.10	≈ 7 m
125	0.125	≈ 6 m
190	0.19	≈ 4 m
250	0.25	≈ 3 m
350	0.35	≈ 2 m

Polyester Film vs DMD – Which Insulation Should You Choose?

Polyester Film and DMD are both widely used in electrical insulation systems. Polyester Film is a single-layer insulation material commonly used for thin barriers and slot liners, while DMD combines polyester film with non-woven polyester layers to provide additional mechanical strength and durability.

Feature	Polyester Film	DMD
Material Type	Single-layer polyester film	Flexible electrical insulation laminate
Construction	Mylar® polyester film	Dacron® / Mylar® / Dacron® laminate
Temperature Class	Class B (130°C)	Class F (150°C)
Mechanical Strength	Good	Higher due to laminated construction
Typical Applications	Thin slot liners, coil barriers, transformer insulation and component wrapping	Slot, phase and liner insulation in motors, transformers and electrical equipment
Best Choice When	A thin electrical insulation film is required	Additional mechanical strength and Class F performance are required

Looking for a more robust insulation laminate? View our DMD – Dacron / Mylar / Dacron Flexible Insulation .

Related Flexible Insulation Materials

Compare Polyester Film with flexible insulation laminates for higher temperature ratings, additional mechanical strength and motor rewinding applications.

Class F Laminate

DMD

Dacron® / Mylar® / Dacron® laminate for slot, phase and liner insulation in motor rewinding applications.

Class H Laminate

NMN / NPN

Nomex® / Mylar® / Nomex® laminate for high-temperature Class H electrical insulation systems.

Flexible Laminate

Hyply

Flexible insulation laminate for motor rewinding, transformer wrapping, panel building and templates.